NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
NewBee Machinery is a professional machinery parts manufacturer providing high quality precision bearings, high-quality non-standard transmission components, and intelligent CNC equipment and more.
Type-A thin-section angular contact ball bearings are ultra-slim constant cross-section rotary components with inclined raceways forming fixed contact angles (15°,25°,40° customizable).They are specially engineered to bear combined radial and unidirectional axial loads simultaneously,perfect for compact,lightweight,high-precision limited-space equipment.
Core Technical Specifications
Contact Angle Options:15°,25°,40° for different thrust load demands.Size Range:Inner diameter 25.4–508mm,constant cross-section 10×10–15×15mm.Materials:Rings & rolling elements (52100 bearing steel,440C/316 stainless steel,ceramic hybrid);Cages (nylon,brass,stainless steel).Precision Grades:ABEC-1/3/5 (P0,P6,P5) aerospace ultra-precision standards.Sealing & Lubrication:Open,shielded,fully sealed structures;standard anti-oxidation grease,vacuum low-outgassing solid lubricants for special cleanroom environments.Operating Temperature:-40℃ ~ 120℃,customized extreme low-temperature lubricant for special working conditions.Lead Time:Standard models ship within 5–15 working days;customized preloaded bearings with special coatings require negotiated delivery schedules.
Industrial collaborative robots (Cobots) are lightweight,safe human-machine interactive robotic arms designed to work side-by-side with operators without heavy safety fences,widely deployed in electronics assembly,auto parts processing,food packaging,medical product manufacturing and laboratory automation.Unlike traditional heavy industrial robots,cobots feature small body size,low self-weight,flexible multi-degree-of-freedom movement and built-in collision sensing safety functions.The core moving units of collaborative robots include shoulder rotary joints,elbow swing joints,wrist multi-axis modules and end effector rotating mechanisms.These joint spaces are extremely narrow and must reserve hollow channels for built-in cables,air pipes and sensor lines.During continuous repetitive pick-and-place,assembly and sorting work,robot joints bear alternating radial weight of the arm,unidirectional axial force from reducers and frequent overturning impact loads.Ordinary standard bearings are too bulky and heavy,and large rotational clearance will cause arm shaking,poor repeated positioning accuracy and hidden collision safety hazards.Therefore,ultra-light,zero-backlash thin section angular contact ball bearings become the core rotary support for all cobot joint modules.
Constant Cross-Section Design
Space & Weight Saving:Unlike standard ISO series bearings-where cross-sectional height increases as bore size increases-thin section bearings maintain a fixed,extremely narrow cross-section regardless of the shaft diameter.
Compact Footprint:This constant geometry drastically reduces envelope dimensions,overall assembly weight,and rotational inertia without sacrificing shaft diameter size,reserving large hollow inner holes for robot internal wiring routing.
High Axial (Thrust) Load Handling in One Direction
Contact Angle Geometry:The inner and outer ring raceways are displaced relative to each other along the bearing axis,typically creating a 15°,25° or 40° contact angle.
Combined Loads:This geometry enables the bearing to support high thrust (axial) loads in one direction,alongside concurrent radial loads.
Duplex Configurations:To support thrust loads in both directions or to increase system stiffness,these bearings are frequently mounted in back-to-back (DB),face-to-face (DF) paired arrangements inside robot joint reducers.
Precision & High Rigidity
Preload Capability:Thin section angular contact bearings can be ground for light,medium or heavy preloading.Preloading removes internal clearance and mechanical backlash,eliminating arm jitter during low-speed cobot operation.
Smooth Rotational Accuracy:Ultra-precision superfinishing ensures minimal rotational runout,realizing micron-level repeated positioning required for precision assembly.
Low Friction & Low Torque
Small Rolling Elements:Miniature steel balls cut centrifugal force and rolling resistance greatly.
High-Speed Efficiency:Low friction generates little heat during frequent reciprocating swing,avoiding grease aging inside sealed robot joint cabins and reducing motor power consumption.
Industrial Collaborative Robots
Shoulder rotary joint bearings,elbow swing joint supports,multi-axis wrist modular bearings,end effector rotary shafts,gripper rotating units,built-in hollow rotary encoder bases of cobot reducers.
General Industrial Robotics
Traditional six-axis robot arm joints,palletizing robot turntables,desktop miniature handling robots,flexible feeding equipment rotary indexing tables.
Aerospace & Precision Optics
Airborne optoelectronic pod gimbals,satellite antenna pointing mechanisms,small drone camera PTZ rotary bases.
Semiconductor & Cleanroom Automation
Wafer transfer robot arms,EFEM rotary modules,precision optical inspection turntables,low-particle vacuum rotary platforms.
Medical & Food Processing Equipment
Medical assembly robotic arms,CT small rotating components,food packaging rotary positioning heads,pharmaceutical sorting manipulators.
Ultra-Light Weight Reduces Cobot Load & Improves Safety:Collaborative robots have strict self-weight limits to ensure collision safety when contacting human workers.Thin section angular contact ball bearings cut component weight by over 40% compared to same-bore standard bearings.Lighter joint moving parts lower overall arm inertia,the collision buffer response becomes more sensitive,effectively reducing impact force during accidental human-machine contact and meeting international cobot safety certification standards.
Slim Constant Cross-Section Realizes Hollow Joint Wiring:Cobot joints must reserve central hollow channels for power lines,signal cables and air hoses.Conventional thick bearings occupy too much radial space and cannot reserve wiring holes,while thin bearings retain large inner bore with fixed ultra-thin wall.Designers arrange all pipelines through the bearing center,simplifying joint structural layout and realizing fully built-in cable routing to avoid external wire winding risks during robot rotation.
Preloaded Zero-Clearance Ensures Assembly Position Accuracy:Electronics and medical assembly require ±0.01mm repeated positioning tolerance.Ordinary bearings have internal play,leading to wrist shaking during repeated pick-and-place.Preloaded thin angular contact ball bearings completely eliminate backlash,suppress micro-vibration under alternating assembly loads,guarantee consistent motion track of robot grippers and greatly reduce defective assembly rates.
Low Friction Lowers Energy Consumption & Extends Continuous Working Time:Low-torque rolling characteristic reduces servo motor output load,cutting cobot power consumption by 10%–20% during long-shift 24-hour production.Less heat generation prevents grease deterioration inside sealed joints,extending the bearing maintenance cycle and improving factory equipment operation rate.
Composite Load Adaptability Simplifies Joint Module Structure:A single paired set of thin bearings bears radial arm weight,reducer axial thrust and assembly overturning torque simultaneously,replacing multiple groups of separate radial and thrust bearing combinations.It shrinks joint module volume,reduces the number of mechanical parts and lowers cobot manufacturing and after-sales maintenance costs.
Wide Lubrication & Sealing Options Fit Multi-Scenario Production:We provide food-grade clean grease,low-outgassing vacuum lubricant and dustproof fully sealed variants.Bearings adapt dust-free electronic workshops,sterile medical assembly lines and oil-spattered auto processing plants,without frequent disassembly for lubrication replacement,supporting long-term unattended automated production.
Manufacturer of Thin Section Angular Contact Ball Bearings
Newbeetrans is a professional manufacturer specializing in collaborative robot dedicated thin section bearings,supplying complete bearing solutions for cobot joint modules,reducers and end effector rotary parts.
Cobot Customization Service:Provide low-inertia preloaded thin bearings,stainless steel cleanroom versions,food-safe lubrication customized models; robot prototype sample bearings can be delivered within 10–15 working days based on customer drawings.
Strict Precision Inspection:All inner/outer rings and steel balls adopt ultra-precision superfinishing.Every finished bearing undergoes low-torque testing,reciprocating swing fatigue test and micro-runout inspection to meet robot precision requirements.
Stable Global Shipment:Mass stock of standard Type A thin bearings for fast delivery; complete air and sea cross-border logistics for robot manufacturers worldwide.
Authoritative Quality Certification:Products comply with ISO 9001 quality system,SGS cleanroom and low-friction test reports can be provided upon request.
Global Technical Support:Professional bearing engineering team provides load calculation,contact angle matching and duplex preload design for all types of collaborative robot joint structures.
For technical specifications,pricing,or custom bearing solutions:
Email:paul@newbeetrans.com
Website:www.newbeetrans.com
WhatsApp
sales@newbeetrans.com
+8615090185276